In 1914, Aminoff stopped painting and resumed his studies of mineralogy and crystallography, which he had previously put aside.

Through the great support from his first wife, Aminoff received a licentiate at Stockholm University in 1916.

The diffraction techniques he brought to Sweden later attracted the interests from people such as Gösta Phragmén[8] and Arne Westgren, whom Aminoff mentored.

Aminoff was elected in 1933 as a member of the Royal Swedish Academy of Sciences.

[1] A mineral found by Aminoff in Långban's mine in Värmland has been named after him as aminoffite.